tcgetsid3
Get session id associated with a controlling terminal
Usage
#include <termios.h>
pid_t
tcgetsid(int fd);
Library
Standard C Library (libc, -lc)
Overview
The tcgetsid() function returns the process group ID of the session leader for a controlling terminal specified by fd.
Errors
If an error occurs, tcgetsid() returns -1 and the global variable errno is set to indicate the error, as follows:
- [EBADF]
-
The fd argument is not a valid file descriptor.
- [ENOTTY]
-
The calling process does not have a controlling terminal or the underlying terminal device represented by fd is not the controlling terminal.
Releases
39 releases since FreeBSD 8.0-RELEASE; the text changed 26 times.